From 21f4f92410dc302b43c6c8307191704ba93c748d Mon Sep 17 00:00:00 2001 From: Sunil V L Date: Mon, 15 May 2023 11:19:25 +0530 Subject: clocksource/timer-riscv: Add ACPI support Initialize the timer driver based on RHCT table on ACPI based platforms. Currently, ACPI doesn't support a flag to indicate that the timer interrupt can wake up the cpu irrespective of its power state. It will be added in future update. Signed-off-by: Sunil V L Acked-by: Rafael J. Wysocki Reviewed-by: Andrew Jones Reviewed-by: Conor Dooley Link: https://lore.kernel.org/r/20230515054928.2079268-19-sunilvl@ventanamicro.com Signed-off-by: Palmer Dabbelt --- drivers/clocksource/timer-riscv.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'drivers/clocksource') diff --git a/drivers/clocksource/timer-riscv.c b/drivers/clocksource/timer-riscv.c index cecc4662293b..da3071b387eb 100644 --- a/drivers/clocksource/timer-riscv.c +++ b/drivers/clocksource/timer-riscv.c @@ -10,6 +10,7 @@ #define pr_fmt(fmt) "riscv-timer: " fmt +#include #include #include #include @@ -207,3 +208,13 @@ static int __init riscv_timer_init_dt(struct device_node *n) } TIMER_OF_DECLARE(riscv_timer, "riscv", riscv_timer_init_dt); + +#ifdef CONFIG_ACPI +static int __init riscv_timer_acpi_init(struct acpi_table_header *table) +{ + return riscv_timer_init_common(); +} + +TIMER_ACPI_DECLARE(aclint_mtimer, ACPI_SIG_RHCT, riscv_timer_acpi_init); + +#endif -- cgit v1.2.3-58-ga151